Introduction

This is an i2c communication with a built-in PWM driver and a clock. This means that this will be very different from the TLC5940 series. You don’t need to constantly send signals to take up your MCU!

It is 5V compatible, which means you can also control it with a 3.3V microcontroller and drive it safely to a 6V output (it is also possible to control the white or blue indicator with a 3.4+ positive voltage)

The 6 address select pin allows you to hang 62 drive boards on a single i2c bus for a total of 992 PWM outputs. That would be a very huge resource.

About 1.6Khz adjustable frequency PWM output

Prepare output 12-bit resolution for stepper motors, which means 4us resolution at 60Hz update rate

Configurable push-pull output or open output

Output enable pin enables fast disable of all outputs

Specification

 PCA9685 chip is wrapped in the center of the small board

 power input terminal

 Green power indicator

 It  is convenient for you to insert 16 servo motors at a time in 4 sets of 3-pin connectors (the servo motor plug is slightly wider than 0.1″, so you can put 4 pairs of 0.1″ connectors)

 Reverse polarity protection input on the terminal block
 Cascade design

  Place a large capacitor on the V+ line (you will need it in some cases). The maximum input voltage of the peripheral input depends on the capacitance of this 10V1000uf.

 A 220 ohm series resistor is placed on all PWM output lines to protect them and easily drive the LEDs.